You will find keys set to unlock everything in the void in a future map.
This was all story of Magic Ring. Ghost hunting would have been small part of it but since that project is cancelled this is the best Magic Ring experience players will get.
Viewing post in LSHT <===> LSHR Update Plans comments
There no need to add reset option since you can leave the map without catching the ghost. I need to understand why ghosts are getting stuck and fix it.
You can try to rescue them once quest reset option is available. It will not be available like the other remaining option. You need to find God of this universe to help you.